ACCO BRANDS Corp

The following table sets forth the beneficial ownership of the Company’s common stock as of March 2, 2026 by the following individuals or entities:

•

each person known to us that owns more than 5% of the outstanding shares of the Company’s common stock;

•

each of our director nominees and named executive officers; and

•

all directors, director nominees named executive officers and all other executive officers of the Company as a group.

Beneficial ownership is determined in accordance with the rules of the SEC. Except as otherwise indicated, each person named in the table has sole voting and investment power with respect to all shares of common stock shown as beneficially owned, subject to applicable community property laws. As previously discussed, we have stock ownership guidelines, and all of our directors have met or are on track to meet these guidelines. As of March 2, 2026, 90,170,277 shares of common stock were outstanding. In computing the number of shares of common stock beneficially owned by a person and the percentage ownership of that person, shares of common stock that are subject to RSUs or stock options held by that person that have vested or that will vest or become exercisable on or before May 1, 2026 (within 60 days after March 2, 2026) are deemed outstanding.

• Less than 1%

(1)

Indicates the number of shares of common stock issuable upon the exercise of options exercisable on or before May 1, 2026 (within 60 days after March 2, 2026).

(2)

Indicates the number of shares subject to vested RSUs or RSUs that may vest on or before May 1, 2026 (within 60 days after March 2, 2026). For members of our Board of Directors, these units represent the right to receive one share of common stock upon cessation of service as a director.

98 ACCO BRANDS | 2026 PROXY STATEMENT

(3)

Based solely on a Schedule 13G/A filed with the SEC on January 26, 2024 by BlackRock, Inc., on its own behalf and on behalf of certain affiliates. Of these shares, BlackRock, Inc. has sole voting power over 7,368,102 of the shares and sole dispositive power over all of the shares.

(4)

Based solely on a Schedule 13G/A filed with the SEC on July 14, 2025 by Allspring Global Investment Holdings, LLC. Of these shares, Allspring Global Investment Holdings, LLC has sole dispositive power and sole voting power with respect to 7,060,904 shares.

(5)

Based solely on a Schedule 13G/A filed with the SEC on November 12, 2024 by The Vanguard Group. Of these shares, The Vanguard Group does not have sole voting power over any of the shares, has sole dispositive power over 5,889,116 shares, has shared voting power over 266,451 shares, and shared dispositive power over 364,383 shares.

(6)

Based solely on a Schedule 13G filed with the SEC on January 30,2026 by The Capital Management Corporation. Of these shares, The Capital Management Corporation has sole voting power over 5,464,321 shares and sole dispositive power over all of the shares.

(7)

Includes 29,537 shares owned by Mr. Rajkowski's wife.

(8)

Mr. Monko's holdings are reported as of the date of his retirement from the Company on December 31, 2025, which is the most recent information available to the Company.

(9)

Ms. Schneider's holdings are reported as of the date of her retirement from the Company on September 30, 2025, which is the most recent information available to the Company.

(10)

Mr. Buchenroth's holdings are reported as of the date of the cessation of his employment with the Company on August 1, 2025, which is the most recent information available to the Company.

(11)

Includes 6,156 shares beneficially owned by Ms, Schneider through the ACCO Brands 401(k) Plan as of September 30, 2025, and an additional 5,786 shares beneficially owned by all other directors and officers as a group, through the ACCO Brands 401(k) Plan as of January 15, 2026.